AirTAC GR400-15 Pressure Regulator (GR40015C3K)
The AirTAC AirTAC GR400-15 Pressure Regulator (GR40015C3K) is a genuine G-series air pressure regulator. It holds a stable downstream pressure over the range 0.05 - 0.9 MPa (7 - 130 psi) with PT1/2" ports, and ships with a pressure gauge. A regulator does not filter the air — put a GF filter upstream, or use a GFR filter regulator, when water and particulate must also be removed.
- TypePressure regulator
- Port sizePT1/2"
- Regulating range0.05 - 0.9 MPa (7 - 130 psi)
- Pressure typeStandard type
- Pressure gaugeFitted
- Reflux valveFitted
- ThreadPT
- BracketFixing bracket included
About the AirTAC GR400-15 Pressure Regulator (GR40015C3K)
GR40015C3K is an AirTAC G-series air pressure regulator in the GR400 size class, fitted with a reverse (check) valve. It reduces and holds downstream pressure on compressed-air lines with 1/2-inch PT ports, and this code comes with an external round pressure gauge reading in bar. As a GR unit it does regulation only: there is no filter bowl, no drainage and no lubrication in this body.
This is a genuine AirTAC part. The GR family spans 200, 300, 400 and 600 sizes in PT, G(BSPP) and NPT threads; the standard regulating range is 0.05-0.9 MPa (7-130 psi) with a maximum inlet pressure of 1.0 MPa (145 psi), and working temperature is -20 to 70 C, non-freezing. A mounting bracket is included. Because AirTAC publishes flow as curves rather than a single rated figure, we confirm the datasheet and flow figures for your application on request.
AirTAC GR400-15 Pressure Regulator (GR40015C3K) Technical Specifications
| Model | AirTAC GR400-15 Pressure Regulator (GR40015C3K) |
|---|---|
| Series | GR400 pressure regulator |
| Port size | PT1/2" (PT thread) |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Standard type |
| Bracket | Fixing bracket included |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -20 to +70 °C |
| Pressure gauge | Fitted — round, bar scale |
| Reflux valve | Fitted (reverse flow permitted) |
| Mounting | Panel mounting; optional fixing bracket |
Specifications follow the official AirTAC G-series air-preparation data. Note the GR temperature range is -20 to +70 °C, wider than the other G-series units. A regulator has no bowl and no filter element, so there is no filtering grade. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
Model Code: AirTAC GR400-15 Pressure Regulator (GR40015C3K)
| GR400 | G-series pressure regulator, 400 body — sets the port range. |
|---|---|
| 15 | Port size PT1/2". This body offers 10 = PT3/8", 15 = PT1/2". |
| (blank) | Standard type — 0.05 - 0.9 MPa (7 - 130 psi). Blank is standard, L is the low-pressure type. |
| (blank) | Fixing bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
Field order is size, port, type, bracket, gauge, gauge shape, scale, thread, reflux — a blank position takes the default. Example: GR300-08LNK is a 300 body, PT1/4", low-pressure type, no gauge, with reflux valve.
Size Class
- GR200PT1/8" - PT1/4"
- GR300PT1/4" - PT1/2"
- GR400PT3/8" - PT1/2"
- GR600PT3/4" - PT1"
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom rather than from a single rated figure.
| This model | GR400 · PT1/2" · 0.05 - 0.9 MPa (7 - 130 psi) |
|---|---|
| One size down | GR300 |
| One size up | GR600 |
| Line order | Filter first, then regulator, then lubricator |
Where the AirTAC GR400-15 Pressure Regulator (GR40015C3K) Is Used
Clamp-and-hold fixtures
Regulated supply to the hold-down clamps on a machining fixture, where the check valve option keeps the downstream circuit from back-feeding when upstream air is removed.
Conveyor gate actuators
Set-pressure control for the divert and stopper gates on a parcel conveyor line, with a bar-scale gauge at the 1/2-inch branch.
Emergency drop-out circuits
Regulated trim on a line where the downstream side must hold its setting during supply interruptions, using the K-suffix check valve in the same body.
Is the AirTAC GR400-15 Pressure Regulator (GR40015C3K) the Right Regulator?
Choose this GR400 configuration when your manifold runs 1/2-inch ports and you also want the K option, which fits a reverse (check) valve in the regulator body. Gauge scale is C3, the bar-reading round gauge; C1 reads MPa and C2 reads psi. Thread is PT as the standard, with G(BSPP) and NPT available as order options, and a mounting bracket is included at no code change. Flow is published as curves, not a single rating, so send us your air demand and we will confirm sizing against the datasheet before you order.
Quick checklist
- ✓ Body size for your peak flow (PT1/2" here)
- ✓ Standard 0.9 MPa or low-pressure 0.4 MPa
- ✓ Gauge fitted, or order N without
- ✓ Gauge shape C round / F square
- ✓ Scale MPa (1), psi (2) or bar (3)
- ✓ Reflux valve needed, order K
Installation & Maintenance Notes
- check Install downstream of the filter, following the airflow arrow.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Set pressure while air is flowing, then lock the knob.
- check Adjust within 0.05 - 0.9 MPa (7 - 130 psi) only.
- check Operating range -20 to +70 °C.
- check Panel-mount or use the fixing bracket; do not hang it on tubing.
The reflux valve lets air flow back through the regulator, which is useful when downstream volume must vent quickly. A regulator does not remove water or particulate; that is the filter's job.
AirTAC GR400-15 Pressure Regulator (GR40015C3K) FAQ
AirTAC publishes regulator flow as performance curves rather than one rated figure, so we do not quote a single l/min or SCFM number. Ask us for the GR400 datasheet and we will confirm the curve and sizing for your application before you order.
K orders the regulator with a reverse (check) valve fitted in the body, while the C3 suffix is the round external gauge reading in bar. Drop the K if your circuit already has a separate check valve.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
Request a Quote for AirTAC GR400-15 Pressure Regulator (GR40015C3K)
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.